<template>
  <div>
    <div class="shopcart">
      <div class="content">
        <div class="content-left" @click="toggleShow">
          <div class="logo-wrapper">
            <div class="logo" :class="">
              <i class="iconfont icon-shopping_cart" :class=""></i></div>
            <div class="num"></div>
          </div>
          <div class="price" :class="">￥123</div>
          <div class="desc">另需配送费￥元</div>
        </div>
        <div class="content-right">
          <div class="pay" :class="payClass">
            {{payText}}
          </div>
        </div>
      </div>
      <transition name="move">
        <div class="shopcart-list" v-show="listShow">
          <div class="list-header">
            <h1 class="title">购物车</h1>
            <span class="empty" @click="clear">清空</span>
          </div>
          <div class="list-content" id="listContent">
            <ul >
              <li class="food" v-for="(food, index) in shopCart" :key="index">
                <span class="name">{{food.name}}</span>
                <div class="price"><span >￥{{food.price}}</span></div>
                <div class="cartcontrol-wrapper">
                  <CartControl :food="food"/>
                </div>
              </li>
            </ul>
          </div>
        </div>
      </transition>

    </div>
    <transition name="fade">
      <div class="list-mask" v-show="listShow" @click="toggleShow"></div>
    </transition>
  </div>
</template>

<script>
  import BScroll from 'better-scroll'
  import { mapState, mapGetters } from 'vuex'
  import CartControl from '../../../../components/pages/Twolevelrouting/goods/CartControl'
  export default {

    data () {
      return {
        isShow: false,
        shopCart:[]
      }
    },

    computed: {
      // ...mapState(['info', 'shopCart']),
      // ...mapGetters(['totalCount', 'totalPrice']),

      payClass () {
        const {totalPrice} = this
        // const {minPrice} = this.info
        // return totalPrice>=minPrice ? 'enough' : 'not-enough'
      },

      payText () {
        const {totalPrice} = this
        // const {minPrice} = this.info
        // if(totalPrice===0) {
        //   return `￥${minPrice}元起送`
        // } else if(totalPrice<minPrice) {
        //   return `还差￥${minPrice-totalPrice}元起送`
        // } else {
        //   return '去结算'
        // }
      },

      // 购物车列表是否显示
      listShow () {
        // 如果没有数量, 直接不显示
        // if(this.totalCount===0) {
        //   // 将isShow改为false
        //   this.isShow = false
        //   return false
        // }

        if(this.isShow) { // 变为打开
          this.$nextTick(() => {
            // 在界面更新后创建BScroll(只能创建一个)

            /*
            单例:
              1. 在创建前, 判断是否存在,只有不存在, 才去创建
              2. 创建后, 保存它
             */
            if(!this.scroll) { // 第一次打开
              this.scroll = new BScroll('#listContent', {
                click: true
              })
            } else {// 后面打开
              // 通知scroll对象
              this.scroll.refresh()
            }
          })
        }

        // 只需要看isShow
        return this.isShow
      }
    },

    methods: {
      toggleShow () {
        // if(this.totalCount) { // 只有有数量时切换
        //   this.isShow = !this.isShow
        // }
      },

      clear () {
        if(window.confirm('确定要清空购物车吗?')) {
          this.$store.dispatch('clearCart')
        }
      }
    },

    components: {
      CartControl
    }
  }
</script>

<style lang="stylus" rel="stylesheet/stylus" scoped>
  @import "../../../../assets/common/stylus/mixins.styl"
  .shopcart
    position: fixed
    left: 0
    bottom: 0
    z-index: 50
    width: 100%
    height: 48px
    .content
      display: flex
      background: #141d27
      font-size: 0
      color: rgba(255, 255, 255, 0.4)
      .content-left
        flex: 1
        .logo-wrapper
          display: inline-block
          vertical-align: top
          position: relative
          top: -10px
          margin: 0 12px
          padding: 6px
          width: 56px
          height: 56px
          box-sizing: border-box
          border-radius: 50%
          background: #141d27
          .logo
            width: 100%
            height: 100%
            border-radius: 50%
            text-align: center
            background: #2b343c
            &.highlight
              background: $green
            .icon-shopping_cart
              line-height: 44px
              font-size: 24px
              color: #80858a
              &.highlight
                color: #fff
          .num
            position: absolute
            top: 0
            right: 0
            width: 24px
            height: 16px
            line-height: 16px
            text-align: center
            border-radius: 16px
            font-size: 9px
            font-weight: 700
            color: #ffffff
            background: rgb(240, 20, 20)
            box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.4)
        .price
          display: inline-block
          vertical-align: top
          margin-top: 12px
          line-height: 24px
          padding-right: 12px
          box-sizing: border-box
          border-right: 1px solid rgba(255, 255, 255, 0.1)
          font-size: 16px
          font-weight: 700
          &.highlight
            color: #fff
        .desc
          display: inline-block
          vertical-align: top
          margin: 12px 0 0 12px
          line-height: 24px
          font-size: 10px
      .content-right
        flex: 0 0 105px
        width: 105px
        .pay
          height: 48px
          line-height: 48px
          text-align: center
          font-size: 12px
          font-weight: 700
          &.not-enough
            background: #2b333b
          &.enough
            background: #00b43c
            color: #fff
    .shopcart-list
      position: absolute
      left: 0
      top: 0
      z-index: -1
      width: 100%
      .list-header
        height: 40px
        line-height: 40px
        padding: 0 18px
        background: #f3f5f7
        border-bottom: 1px solid rgba(7, 17, 27, 0.1)
        .title
          float: left
          font-size: 14px
          color: rgb(7, 17, 27)
        .empty
          float: right
          font-size: 12px
          color: rgb(0, 160, 220)

      .list-content
        padding: 0 18px
        max-height: 217px
        overflow: hidden
        background: #fff
        .food
          position: relative
          padding: 12px 0
          box-sizing: border-box
          bottom-border-1px(rgba(7, 17, 27, 0.1))
          .name
            line-height: 24px
            font-size: 14px
            color: rgb(7, 17, 27)
          .price
            position: absolute
            right: 90px
            bottom: 12px
            line-height: 24px
            font-size: 14px
            font-weight: 700
            color: rgb(240, 20, 20)
          .cartcontrol-wrapper
            position: absolute
            right: 0
            bottom: 6px

  .list-mask
    position: fixed
    top: 0
    left: 0
    width: 100%
    height: 100%
    z-index: 40
    backdrop-filter: blur(10px)
    opacity: 1
    background: rgba(7, 17, 27, 0.6)
    &.fade-enter-active, &.fade-leave-active
      transition: all 0.5s
    &.fade-enter, &.fade-leave-to
      opacity: 0
</style>
